<https://portlandpress.com/biochemsoctrans/article/38/5/1202/83873/Predicting-novel-pathways-in-genome-scale>
<http://schema.org/imagealt>
"The subsystem need not be connected. The black reaction arrows are here to indicate an elementary flux pattern; remaining reactions are shown in grey. The connected route from A to B is a pathway reconstructed from that elementary flux pattern."
<https://port.silverchair.com/biochemsoctrans/article-abstract/38/5/1202/83873/Predicting-novel-pathways-in-genome-scale?redirectedFrom=fulltext>